Effects of Integrated Control of Active Four Wheel Steering and Individual Wheel Torque on Vehicle Handling and Stability - A Comparison of Alternative Control Strategies -

AbstractThe postbloom and summer sprays recommended in Florida commercial citrus cultures for management of insect and mite pests and phytopathogenic diseases caused a significant (P < 0.05) reduction of citrus blackfly, Aleurocanthus woglumi Ashby, infesting urban dooryard citrus. There were no observed adverse chronic effects on populations of the parasite Amitus hesperidum Silvestri, or the predator complex consisting of spiders, chrysopids, and coccinellids attributable to the chemical treatments. The absence of chronic pesticide-induced interference with biological control agents was interpreted as an indication of the potential for development of integrated control strategies against A. woglumi should this insect invade commercial citrus areas in Florida.

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The Integrated Control of Semi-Active Suspension and Electronic Stability Program Based on Fuzzy Logic Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.29-32.2059 ◽

2010 ◽

Vol 29-32 ◽

pp. 2059-2064

Author(s):

Jian Hua Guo ◽

Liang Chu ◽

Xiao Bing Zhang ◽

Fei Kun Zhou

Keyword(s):

Fuzzy Logic ◽

Integrated Control ◽

Integrated System ◽

Ride Quality ◽

Electronic Stability Program ◽

Vehicle Handling ◽

Logic Control ◽

Fuzzy Logic Method ◽

The Individual ◽

Integrated Control System

In this paper, an integrated system of SAS/ESP is proposed to improve vehicle handling performance and stability. The 15DOF vehicle model which describes the dynamics of the integrated system is established. A fuzzy logic control strategy is presented to control the integrated system. The simulation results show that the integrated control system can obviously improve vehicle maneuverability and ride quality much more than the individual control.

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SIMULATION OF INTEGRATED CONTROL STRATEGIES FOR OROBANCHE SPP. BASED ON A LIFE CYCLE MODEL

Experimental Agriculture ◽

10.1017/s001447970100401x ◽

2001 ◽

Vol 37 (1) ◽

pp. 37-51 ◽

Cited By ~ 21

Author(s):

E. KEBREAB ◽

A. J. MURDOCH

Keyword(s):

Seed Bank ◽

Control Strategies ◽

Soil Seed Bank ◽

Integrated Control ◽

Integrated Approach ◽

Cultural Control ◽

Computer Simulation Model ◽

Weed Species ◽

Hand Weeding ◽

High Level

A computer simulation model was developed to investigate strategies for control of the parasitic weed species of Orobanche. The model makes use of data from published literature and predicts infestation levels in a dynamic and deterministic way. It is predicted that sustainable control of the parasite can only be achieved by reducing the soil seed bank to levels of 1000–2000 seeds m−2 and maintaining it at that level in subsequent years. When cultural control methods such as hand weeding, trap/catch cropping, delayed planting, resistant cultivars and solarization were considered individually, a relatively high level of effectiveness was required to contain the soil seed bank. An integrated approach with a selection of appropriate cultural methods is therefore recommended for further testing and validation in the field. The simulations demonstrate the importance of preventing new seeds entering the soil seed bank and that although reducing the soil seed bank may not increase yield for the first few years, it will ultimately increase production.

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The application of compound proportional resonant control strategy in multiple PV inverters system

Modern Physics Letters B ◽

10.1142/s0217984918400985 ◽

2018 ◽

Vol 32 (34n36) ◽

pp. 1840098

Author(s):

Yuan Li ◽

Huifang Shen ◽

Chao Xiong ◽

Yaofei Han ◽

Guofeng He

Keyword(s):

Control Strategy ◽

Closed Loop ◽

Control Strategies ◽

Integrated Control ◽

Reference Signal ◽

Loop Model ◽

Harmonic Compensation ◽

Feed Forward ◽

Feed Forward Control ◽

Set Up

In order to eliminate the effect on the grid current caused by the background harmonic voltage and the reference signal on the grid connected multi-inverter, this paper adopts the double closed-loop feed-forward control strategy. This strategy is based on the inductor voltage and the grid-connected current, and the integrated control strategy of quasi-proportional resonance loop parallel to a specific harmonic compensation loop. Based on the closed-loop model of multiple inverters, the change curves of the transfer function of the two control strategies are compared with the feed-forward control and the composite proportional resonance. The two corresponding control methods are used to analyze the current quality of the multi-inverter impact. Finally, the MATLAB/Simulink simulation model is set up to verify the proposed control strategies. The simulation results show that the proposed method can achieve better tracking of the sinusoidal command signal at the fundamental frequency, and enhance the anti-interference ability of the system at the 3rd, 5th, and 7th harmonic frequency.

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Development of the first georeferenced map of Rhipicephalus (Boophilus) spp. in Mexico from 1970 to date and prediction of its spatial distribution

Geospatial health ◽

10.4081/gh.2018.624 ◽

2018 ◽

Vol 13 (1) ◽

Cited By ~ 2

Author(s):

Yazmin Alcala-Canto ◽

Juan Antonio Figueroa-Castillo ◽

Froylán Ibarra-Velarde ◽

Yolanda Vera-Montenegro ◽

María Eugenia Cervantes-Valencia ◽

...

Keyword(s):

Spatial Distribution ◽

Environmental Variables ◽

Control Strategies ◽

Integrated Control ◽

Area Under The Curve ◽

Entropy Method ◽

Distribution Model ◽

Economic Losses ◽

Precipitation Seasonality ◽

Epidemiological Risk

The tick genus Ripicephalus (Boophilus), particularly R. microplus, is one of the most important ectoparasites that affects livestock health and considered an epidemiological risk because it causes significant economic losses due, mainly, to restrictions in the export of infested animals to several countries. Its spatial distribution has been tied to environmental factors, mainly warm temperatures and high relative humidity. In this work, we integrated a dataset consisting of 5843 records of Rhipicephalus spp., in Mexico covering close to 50 years to know which environmental variables mostly influence this ticks’ distribution. Occurrences were georeferenced using the software DIVA-GIS and the potential current distribution was modelled using the maximum entropy method (Maxent). The algorithm generated a map of high predictive capability (Area under the curve = 0.942), providing the various contribution and permutation importance of the tested variables. Precipitation seasonality, particularly in March, and isothermality were found to be the most significant climate variables in determining the probability of spatial distribution of Rhipicephalus spp. in Mexico (15.7%, 36.0% and 11.1%, respectively). Our findings demonstrate that Rhipicephalus has colonized Mexico widely, including areas characterized by different types of climate. We conclude that the Maxent distribution model using Rhipicephalus records and a set of environmental variables can predict the extent of the tick range in this country, information that should support the development of integrated control strategies.

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Integrated Wild Oat (Avena fatua) Management Affects Spring Barley (Hordeum vulgare) Yield and Economics

Weed Technology ◽

10.1017/s0890037x00034424 ◽

1992 ◽

Vol 6 (1) ◽

pp. 129-135 ◽

Cited By ~ 24

Author(s):

David L. Barton ◽

Donald C. Thill ◽

Bahman Shafii

Keyword(s):

Grain Yield ◽

Field Experiments ◽

Control Strategies ◽

Integrated Control ◽

Spring Barley ◽

Barley Grain ◽

Row Spacing ◽

Wild Oat ◽

Seeding Rate ◽

Net Return

The effect of barley seeding rate and row spacing, and triallate, diclofop, and difenzoquat herbicide rate on barley grain yield and quality, and wild oat control were evaluated in field experiments near Bonners Ferry, Idaho, in 1989 and 1990. The purpose of the study was to develop integrated control strategies for wild oat in spring barley. Barley row spacing (9 and 18 cm) did not affect barley grain yield. Barley grain yield was greatest when barley was seeded at 134 or 201 kg ha–1compared to 67 kg ha–1. Wild oat control increased as wild oat herbicide rate increased and barley grain yield was greatest when wild oat herbicides were applied. However, barley grain yield was similar when wild oat biomass was reduced by either 65 or 85% by applications of half and full herbicide rates, respectively. Net return was greatest when the half rate of herbicide was applied to 100 wild oat plants per m2and was greatest when half or full herbicide rates were applied to 290 wild oat plants per m2. Net return increased when the seeding rate was increased to 134 or 201 kg ha–1when no herbicide was applied and when 290 wild oat plants per m2were present.

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Evidence of Neospora caninum exposure among native Korean goats (Capra hircus coreanae)

Veterinární Medicína ◽

10.17221/7824-vetmed ◽

2014 ◽

Vol 59 (No. 12) ◽

pp. 637-640 ◽

Cited By ~ 5

Author(s):

BY Jung ◽

SH Lee ◽

D. Kwak

Keyword(s):

Neospora Caninum ◽

Control Strategies ◽

Integrated Control ◽

Protozoan Parasite ◽

Capra Hircus ◽

Enzyme Linked Immunosorbent Assay ◽

Serum Samples ◽

Caninum Infection ◽

One Year ◽

And Control

Neospora caninum is a protozoan parasite that causes abortion in ruminants, including goats. The objective of the present study was to determine the seroprevalence of N. caninum in native Korean goats (Capra hircus coreanae). A commercial enzyme-linked immunosorbent assay kit was used to analyse 464 serum samples for the presence of N. caninum antibodies. Four samples (0.9%, 95% confidence intervals – CI: 0.0–1.7) were found to be positive for N. caninum antibodies. The seroprevalence was analysed according to age (less than to one year, young; more than or equal one year, adult; and unknown), sampling season (April to September, warm; October to March, cold), and region (northern, central, and southern). However, there were no statistically significant differences in seroprevalence according to age, season, and region (P > 0.05). This is the first report on the seroprevalence of N. caninum in native Korean goats. The results of this study indicate a nationwide distribution of N. caninum among goats, with a relatively low prevalence. Therefore, the implementation of integrated control strategies as well as measures for prevention and control of N. caninum infection among goats is recommended.

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Research on Integrated Control System of the Gas Pressure in Coke Oven

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.397-400.1214 ◽

2013 ◽

Vol 397-400 ◽

pp. 1214-1219

Author(s):

Xia Bai ◽

Da Lu Guan ◽

Chen Rui

Keyword(s):

Control System ◽

Control Strategies ◽

Integrated Control ◽

Control Object ◽

Coke Oven ◽

Pressure Control ◽

Expert Control ◽

Control Scheme ◽

Hardware Reliability ◽

Pressure Control System

This paper combines hardware reliability and software mobility with modern intelligent control through the analysis of the control object using intelligent decoupling control scheme to control the pressure control system of the large gas collector in coke oven. By using expert control strategies based on the DCS, the paper develops the system design which is versatile and effective.

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